A corpo



L. T. SHERWOOD.

GLASS TANK FuRNAcE.

APPLICATION FILED JULY 31,1916,

1,325,172.v Patented De@.16,1919.

2 SHEETS-SHEET I.

L. T. SHERWOOD.

GLASS TANK FURNACE.

APPLICATION FILED JULY 31,1916,

UNITED STATES PATENT oEErcE.

LAURENCE T. SHERWOOD, OF CONNELLSVILLE, PENNSYLVANIA, ASSIGNOR TO PENN-SYLVANIA WIRE GLASS COMPANY, F PHILADELPHIA, PENNSYLVANIA, A CORPO-RATION 0F NEW JERSEY.

f GLASS-TANK EUENACE.

Specification of Letters Patent.

Patented Dec. 16, 1919.

Application led July'l, 1916.,A Serial No. 112,213. Y

v ments in Glass-Tank Furnaces, of which the following is aspecification.

The principal object of the present invention is to retain for glasstank furnaces.all

the well known advantages of walls and bottoms consisting of blocks ofrefractory material, while at the same time avoiding the previouslyexisting disadvantageous featuresl of such tank walls, which were thatthe blocks disintegrated or wore away and required frequent renewals.The invention consists in the improvements to be presently described andfinally claimed.

The accompanying drawings form part hereof and in them- Figure l, is atop or plan view, partly in section.

Fig. 2, is a side elevational view.

Fig. 3, is a cross-section, somewhat diagraimmatic, and drawn to anenlarged scale an Fig. 4, is a transverse sectional view, drawn to alarger scale.

In the drawings 1, is the refractory wall of a glass tank -furnace andit consists of blocks of refractory material. One face of thisrefractory wall is exposed to the molten glass a. Water cooled retainingplates 2, as of metal, are applied to the other face of the refractorywall l. They serve to keep the temperature of the adjacent blocks,constituting the refractory wall, suiiiciently low to oppose and arrest,if not entirely prevent, erosion, wearing away or disintegration at theportions of the refractory wall which are exposed to the melted glass.Whatever the action may be the fact is that the refractory walls lastmuch longer and withstand the action of the molten glass much betterthan'heretofore. The plates or walls 2, also afford support for therefractory walls. 4 is a luting or packing which may be provided betweenthe confronting surface of the refractory wall and the plates 2, inorder to promote conduction of heat from the molten glass to the waterand inv order to fill any spaces or hollows due to irregularities in theouter face presented by the blocks. As shown the plates 2 are arrangedpractically all around the glass tank furnace and extended above andbelow the high and low levels c and d. One way of applying water to theplates 2 is to make them a part of vwater boxes which may be inclosed,as shown in Figs. 1 to 4.

Referring to Figs. l to 4, 5 are supply pipe connections comprising amanifold and its valved branches on each side of the tank. Theseconnections 5, serve to supply water to the boxes 3, under sulicienthead to maintain a circulation and overflow through the drainconnections 6, which include gaps and funnels that aEord means forascertaining that the circulation is propi erly maintained. 7, arebuck-stays which afford suitable means for supporting brackets 8, thatcarry and hold the water boxes up to their work. It will be obvious thatthe refractory wall l, and water cooled wall 2, are intended to separatethe water or other cooling medium and the molten glass a.

What I claim is:

In a glass tank furnace the combination of a side wall consisting ofblocks of refractory material and having a substantially flat verticalexterior surface, water boxes arranged wholly exteriorly of saidvertical surface of the wall each having one of their substantially Hatwater retaining plates facially applied to said Hat exterior surface,said plates being arranged immediately adjacent to each other andsubstantiallygcontinuous in their application to the surface andextending above and below the glass level in the tank, and independentwater connections for each box.

' LAURENCE T. SHERVVOOD.

